Ask us anything, a person answers.

The whole simulator. You get every board and every part, the breadboard, the wires, the Serial Monitor and the compiler. Run your circuits as often as you like. There is no time limit and nothing to count down. You don’t even need an account. A free account saves 10 projects. They are public: anyone can find them, open them and remix them. The projects lessons make for you don’t count. Projects you already made private or link-only stay that way. Kix AI, Mokxi’s helper, checks your wiring and code as often as you like and answers 5 questions a day once you sign in. Signed in, your WiFi boards can reach the real internet too, 100 requests a day. Downloading your sketch to a real board, and exporting the code, pictures and parts list, come with Pro.

Free saves 10 projects, and Pro has no limit. The projects lessons make for you never count. If you already have more, you keep every one, and you can open, edit, run and save them all. Only a new project waits until you have room, or until you move to Pro.

No. The editor, the templates, the gallery, the compiler and Run all work without signing in. Your browser keeps your work as you go. An account saves your projects online, so they follow you to any computer. It also gives you a link to share.

Simulate free. Build it for real with Pro. Everything in Free, plus: Upload to your real board. Build for your board and upload over USB in one press, or get the .hex, .bin or .uf2 file. The full schematic view. Edit and print the schematic of your circuit. The KiCad file for your PCB tool is free on every plan. PCB and ordering. Lay out a board and send it to a fab. Build guide and Shopping list. A printable Build guide and a Shopping list with prices. Clean pictures, no badge. PNG and SVG exports with no Mokxi badge. The Arduino IDE, PlatformIO and Wokwi zips are free on every plan. Unlimited private projects. No cap on projects, and keep any of them private. Kix AI: 100 questions a day. 20 times the help when something doesn't work. Full version history. Open, name, star and compare every save. Longer recordings, no badge. Videos up to 5 minutes and GIFs up to 30 seconds, without the Mokxi badge. More real internet. 1,000 real web and MQTT requests a day from your WiFi boards. Bigger live rooms. Build together with no limit on room size. Your own classes. Make classes for up to 10 students in all. Mokxi for VS Code. Simulate and check your sketches from VS Code, signed in to your account. Works offline. Download Mokxi to your device and build, compile, simulate and save with no internet. It syncs when you are back online. Every part of the simulator is on Free too, so Pro never locks any of it away.

Ultra is for one person who uses Mokxi every day. Its price is on its card, in your currency. Everything in Pro. Every Pro tool, for one person. Kix AI: 5 times Pro's questions. 500 a day at the full price, 5 times Pro's. Priority support. Your tickets go to the top of our inbox. More API and CI minutes. More API minutes, and Mokxi CI for private repositories. Commercial use. Your projects are yours. Use them in paid work and in products you sell. Most makers need only Pro.

Mokxi for VS Code is part of Pro. CI runs (the GitHub Action, and the command line tool in a CI job) are free for public repositories on GitHub and GitLab. For private repositories, CI comes with Ultra. Running a sketch on your own computer with mokxi run stays free, with no account. If you used VS Code or CI in the 60 days before the change, you keep it until December 11, 2026, and the tool tells you so.

Classroom. Classroom is $9.99 a student a year, from 5 students (at least $49.95 for the year), billed once a year. Your own seat is free. From 50 students, each one costs less. You get everything in Pro. You and your whole class can build on one project at the same time. While your students are in your classes, they get Pro features too, with no badge on their pictures or website projects. Seats count across all your classes, and a student in two of them counts once. Pay by card, invoice or purchase order. For up to 10 students, Pro on its own runs your classes too. We love teachers. If you get stuck, a real person will help.

Yes. Make a free account, open the class page, and press Start 30-day free trial. For 30 days, one class of up to 20 students gets Classroom’s class tools. Your students get Pro features while they are in it. You don’t need a card, and each teacher account gets one trial. When it ends, nothing is deleted. You can still read the class list and the work your students handed in. The class page shows how to keep going.

Yes. Every account can try Pro free for 7 days, once. It takes a card, and nothing is charged for those 7 days. It starts when you choose it: press Start 7-day free trial on this page, or any Pro button in the editor. We email you 3 days before the first charge, with its date and amount. Cancel before the trial ends, from your account page, and you pay nothing: you are back on Free and nothing is deleted. Every project stays yours to open, edit and save. Only a new one waits until you are under the limit.

That is Classroom too. Classroom is $9.99 a student a year, from 5 students (at least $49.95 for the year), billed once a year. Your own seat is free. Each student costs less from 50 students, less again from 150 and from 500. Enter your number of students in the calculator on the classroom page to get a written quote in minutes, or press Talk to us and a person will walk you through it. The seats go on the account of the teacher who asks, so each teacher with classes asks for their own. Your school can pay by card, or by purchase order with 30 days to pay. Every student gets Pro in class, and the whole class can build together with no limit on people. We also sign your data privacy agreement and help set up your classes.